CN111060856B - Nuclear magnetic resonance transverse radio frequency coil shaping device and transverse radio frequency coil shaping method - Google Patents
Nuclear magnetic resonance transverse radio frequency coil shaping device and transverse radio frequency coil shaping method Download PDFInfo
- Publication number
- CN111060856B CN111060856B CN202010014523.7A CN202010014523A CN111060856B CN 111060856 B CN111060856 B CN 111060856B CN 202010014523 A CN202010014523 A CN 202010014523A CN 111060856 B CN111060856 B CN 111060856B
- Authority
- CN
- China
- Prior art keywords
- coil
- radio frequency
- shaping
- sheet
- setting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
- G01R33/34007—Manufacture of RF coils, e.g. using printed circuit board technology; additional hardware for providing mechanical support to the RF coil assembly or to part thereof, e.g. a support for moving the coil assembly relative to the remainder of the MR system
Abstract
The invention provides a nuclear magnetic resonance transverse radio frequency coil shaping device and a transverse radio frequency coil shaping method, wherein the device comprises a support column, a coil shaping sheet, a coil shaping outer sleeve and a fixing sheet clamping sleeve; the coil shaping sheet is provided with a groove, and the wiring layout of the groove is consistent with that of the transverse radio frequency coil; the coil shaping sheets are fixedly arranged in the middle of the outer side wall of the supporting column, and every two coil shaping sheets are uniformly coated on the outer side wall of the supporting column at a certain interval; the transverse radio frequency coil is arranged in the groove; the coil setting jacket is arranged on the outer side wall of the coil setting sheet, the upper portion and the lower portion of the outer side wall of the supporting column are provided with the fixing sheet clamping sleeves, and the two ends of the fixing sheet clamping sleeves and the two ends of the coil setting sheet are respectively positioned and abutted. By applying the technical scheme, the processing and manufacturing cost of the nuclear magnetic resonance coil can be reduced, and the coil with higher performance can be obtained.
Description
Technical Field
The invention relates to the technical field of nuclear magnetic resonance radio frequency coil and probe development and processing, in particular to a nuclear magnetic resonance transverse radio frequency coil shaping device and a transverse radio frequency coil shaping method.
Background
The nuclear magnetic resonance coil is positioned at the most front end of the nuclear magnetic resonance instrument and used for transmitting radio frequency pulses for exciting the nuclear nuclei to generate resonance and receiving nuclear magnetic resonance signals emitted by the nuclear magnetic resonance, and the performance of the nuclear magnetic resonance coil plays an important role in the sensitivity and the resolution of the nuclear magnetic resonance instrument. According to the relation between the polarization direction of the coil radio frequency field and the central axis direction of the coil, the nuclear magnetic resonance coil is divided into a transverse coil and an axial coil, the polarization direction of the transverse coil radio frequency field is perpendicular to the central axis (such as a saddle coil, an AG coil and a birdcage coil), the polarization direction of the axial coil radio frequency field is parallel to the central axis (such as a solenoid coil), the transverse coil is mainly used for a high-field liquid nuclear magnetic resonance spectrometer and a magnetic resonance imager, and the axial coil is mainly used for a solid nuclear magnetic resonance instrument and a low-field C-type permanent magnet miniaturized nuclear magnetic resonance instrument. The main factors affecting the performance of the coil are: the coil structure, shape and material magnetic susceptibility play a decisive role in the Q value, radio frequency uniformity, static magnetic field B0 uniformity and sample detection quantity of the coil. The assembly precision, structural deformation and the like of the coil play a crucial role in high performance, and the structural deformation, asymmetry and coil surface roughness will influence the radio frequency uniformity, B0 shimming and Q value, so that the coil performance is seriously reduced. Because the coil is wound by adopting a metal wire with a thinner wire diameter or a thin metal strip, the coil is easy to deform in the winding and processing processes, particularly a transverse coil, the cylindrical structure is complex and loose, the space among multiple layers is small, the manual winding is difficult to form, and the coil deforms seriously.
There are a lot of literature reports on the magnetic resonance coil structure and the research of different applications at home and abroad, and because the theory and the application related to the coil processing and manufacturing are few, the descriptions of the coil shaping device and the method are not seen in the reports.
Document 1: the invention discloses a method and a device for determining the position of a magnetic resonance coil and a magnetic resonance imaging system in Xianwang, Wuyi army, China invention patent publication No. CN110095741A, and discloses a method for determining the relative position of the magnetic resonance imaging coil and a sample by using a magnetic resonance imaging experiment and a data processing algorithm, so that the calculation deviation caused by signal distortion loss and the like when the coil is positioned at the edge of an imaging sample is solved. Document 2: "p, guros, t, nidiffel, b, varez, n, hydnedel, d, sapinalas, magnetic resonance coil unit and method of manufacturing the same, chinese invention patent, publication No.: CN105934198A ", discloses a Magnetic Resonance (MR) coil unit, which uses an opening on the coil, an MR marker and an optical marker to realize the positioning between the coil and the detection part. Document 3: courage, rest, houxing philosophy, a humble and the like, a clamp for nuclear magnetic resonance sensors, a Chinese invention patent, publication number: CN 106737283A' discloses a nuclear magnetic resonance sensor clamp, which is used for fixing and detecting a nuclear magnetic resonance sensor and is suitable for independent detection of an umbrella group at different positions of a composite insulator on an engineering site.
The commercial high-field nuclear magnetic resonance coil spectrometer coil is manufactured by cutting and processing a whole metal material at high precision, and a cylindrical transverse coil with a symmetrical and complete structure can be obtained through ultrahigh fine processing. However, this requires a high machining precision and is expensive. The need for some laboratory coil development and low-cost miniaturized portable nmr instruments clearly makes the overall fine-machining approach unacceptable. And the transverse coil completely and manually wound by a simple cylinder is difficult to control the integrity and structural deformation of the cylinder and even cannot be shaped, so that the detection performance of the coil is greatly influenced. On the other hand, the magnetic resonance coil requires the surface to be as smooth as possible, which is beneficial to the transmission of radio frequency signals and the uniformity of the magnetic susceptibility of materials, the smoothness of the coil surface obtained by the whole ultra-high fine processing is not ideal, the subsequent further processing is needed, and the polishing post-processing of the cylindrical surface coil further increases the cost and the complexity of the coil manufacturing.
Coil deformation and the like sometimes have great influence on final signal detection, and meanwhile, the reduction of the production cost is an important requirement of a miniaturized portable nuclear magnetic resonance instrument. Therefore, the coil device and the method for obtaining the coil with good shape at low processing cost have important significance.
Disclosure of Invention
The invention aims to provide a nuclear magnetic resonance transverse radio frequency coil shaping device and a transverse radio frequency coil shaping method, which can reduce the processing and manufacturing cost of a nuclear magnetic resonance coil and obtain a coil with higher performance.
In order to solve the technical problem, the invention provides a nuclear magnetic resonance transverse radio frequency coil shaping device which comprises a support column, a coil shaping sheet, a coil shaping outer sleeve and a fixing sheet clamping sleeve, wherein the support column is provided with a support column; the coil shaping sheet is provided with a groove, and the wiring layout of the groove is consistent with that of the transverse radio frequency coil; the coil shaping sheets are fixedly arranged in the middle of the outer side wall of the supporting column, and every two coil shaping sheets are uniformly coated on the outer side wall of the supporting column at a certain interval; the transverse radio frequency coil is arranged in the groove; the coil setting jacket is arranged on the outer side wall of the coil setting sheet, the upper portion and the lower portion of the outer side wall of the supporting column are provided with the fixing sheet clamping sleeves, and the two ends of the fixing sheet clamping sleeves and the two ends of the coil setting sheet are respectively positioned and abutted.
In a preferred embodiment, the width, length and depth of the groove are consistent with those of the transverse radio frequency coil.
In a preferred embodiment, the coil shape setting sheet is embodied as an arc shape setting sheet.
In a preferred embodiment, both ends of the coil shape fixing sheet are provided with positioning handles, the fixing sheet clamping sleeve is provided with a positioning concave part, and the positioning handles are inserted into the positioning concave part to enable the coil shape fixing sheet to be positioned and abutted with the fixing sheet clamping sleeve.
In a preferred embodiment, four coil shape-defining pieces are provided, and each coil shape-defining piece is provided with one positioning handle; four positioning concave parts are arranged on the fixing sheet clamping sleeve along the central rotation symmetry.
In a preferred embodiment, the coil shaping outer sleeve is an arc-shaped shaping outer sleeve, four coil shaping outer sleeves are arranged, and every two coil shaping outer sleeves are mutually spliced to form a hollow cylindrical shaping outer sleeve and cover the outer side wall of the coil shaping sheet.
In a preferred embodiment, the coil shaping sheet is provided with a first connecting screw hole, the support column is provided with a first connecting matching screw hole, and the coil shaping sheet and the support column are fixed through a first screw;
still be provided with the hole of stepping down on the coil setting piece, be provided with the second on the coil setting overcoat and connect the screw, be provided with the second on the support column and connect the cooperation screw, pass in proper order through the second screw the second is connected the screw, is stepped down hole and second and is connected the cooperation screw and realize support column and coil setting overcoat are fixed.
In a preferred embodiment, the fixing plate sleeve is a cylindrical annular fixing plate sleeve, and the inner diameter of the fixing plate sleeve is equal to the outer diameter of the support column; the outer diameter of the fixing piece clamping sleeve is equal to that of the coil shaping piece; the positioning concave part of the fixing plate clamping sleeve is specifically a notch.
In a preferred embodiment, the fixing sheet clamping sleeve is provided with a third connecting screw hole, the support column is provided with a third connecting matching screw hole, and the fixing sheet clamping sleeve and the support column are fixed through a third screw.
The invention also provides a transverse radio frequency coil shaping method, which adopts the nuclear magnetic resonance transverse radio frequency coil shaping device; the method comprises the following steps:
step 1: mounting four coil shaping sheets on the outer surface of the support column through a first screw according to the grain sequence of the grooves;
step 2: embedding two fixing piece clamping sleeves into the coil shaping pieces, and installing the two fixing piece clamping sleeves at the two ends of the outer side of the supporting column by using third screws;
and step 3: pressing and clamping the transverse radio frequency coil plane plate into a groove of a coil shaping sheet, and forming a circular transverse radio frequency coil along the groove;
and 4, step 4: mounting four coil shaping outer sleeves on the outer surfaces of the coil shaping sheets by using second screws, and pressing the transverse radio frequency coil on the outer sides of the coil shaping sheets to form a circular transverse radio frequency coil with curvature;
and 5: welding a capacitor on the transverse radio frequency coil;
step 6: after a certain time interval, the first screw, the second screw and the third screw are dismounted, the coil shaping outer sleeve and the fixing piece clamping sleeve are dismounted, and the central support column is pulled out;
and 7: and pressing the four coil shaping sheets inwards in sequence to be separated from the round transverse radio frequency coil, and taking out the transverse radio frequency coil.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
1. the outer surfaces of the four coil shaping sheets are provided with grooves, and the structure, the width, the length and the depth of the grooves are consistent with those of the transverse coil, so that the shaping and the fastening of the coil can be completely realized; the coil shaping sheet with different groove layouts can be replaced according to the wiring layout of the coil, so that the practicability of the whole device is higher, and the coils with various widths and lengths can be manufactured.
2. The coil shaping sheets adopted by the invention are in the shape of circular arc sheets, the radian of each coil shaping sheet is less than a quarter circular arc of a cylinder at the outer side of the support column by a certain distance, namely, the coil shaping sheets are spaced by a certain distance, so that the coil shaping sheets are convenient to separate from the coil, are convenient and quick to disassemble, and do not damage the coil.
3. The coil shaping outer sleeve adopted by the invention is in a cylindrical sheet shape, the inner diameter of each shaping outer sleeve is equal to the outer diameter of each shaping sheet, the inner arc degree is equal to a cylindrical quarter arc formed by the outer sides of four shaping sheets, screw holes are formed in the two axial ends of the shaping outer sleeve, the shaping outer sleeve is arranged on the outer side wall of the fixing sheet clamping sleeve through screws, the coil is fastened, and the curvature of the wound coil is ensured.
4. The fixing piece clamping sleeve is cylindrical and annular, the inner diameter of the fixing piece clamping sleeve is equal to the outer diameter of the support column, the outer diameter of the fixing piece clamping sleeve is equal to the outer diameter of the coil shaping piece, four notches are formed in one end of the fixing piece clamping sleeve, and the two fixing piece clamping sleeves are tightly nested with the coil shaping piece through the positioning embedding handles, so that the coil can still keep the shape without installing positioning screws, and the coil can be guaranteed to keep a good shape in the disassembling process.
5. The shaping method adopted by the invention is simple, convenient and quick to operate and is beneficial to keeping the coil in a good shape in the operation process.
Drawings
FIG. 1 is a schematic diagram of a coil shape-defining piece in a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of the position relationship between the coil shaping sheet and the supporting column in the preferred embodiment of the present invention;
FIG. 3 is a schematic view of a coil shape-defining piece in accordance with a preferred embodiment of the present invention;
FIG. 4 is a schematic view of a securing plate ferrule in a preferred embodiment of the invention;
FIG. 5 is a schematic view of the installation of a fixing plate ferrule in the preferred embodiment of the invention;
FIG. 6 is a schematic diagram of a wound transverse RF coil in accordance with a preferred embodiment of the present invention;
FIG. 7 is a schematic view of a coil-shaping jacket in accordance with a preferred embodiment of the present invention;
FIG. 8 is a schematic view of the installation of a coil shaping jacket in accordance with a preferred embodiment of the present invention;
FIG. 9 is a schematic view of the coil form jacket of the preferred embodiment of the present invention shown installed;
FIG. 10 is a schematic view of a saddle coil planar plate in accordance with a preferred embodiment of the present invention;
fig. 11 is a schematic view of saddle coils in a preferred embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
A nuclear magnetic resonance transverse radio frequency coil 4 shaping device, refer to fig. 1 to 11, comprising a support column 2, a coil shaping sheet 1, a coil shaping outer sleeve 5 and a fixing sheet ferrule 3; the coil shaping sheet 1 is provided with a groove, and the wiring layout of the groove is consistent with that of the transverse radio frequency coil 4; in particular, the width, length and depth of the grooves also coincide with the transverse radio frequency coil 4. The coil shaping sheets 1 are fixedly arranged in the middle of the outer side wall of the support column 2, and every two coil shaping sheets 1 are uniformly spaced at a certain distance and coated on the outer side wall of the support column 2; the transverse radio frequency coil 4 is arranged in the groove; the coil setting jacket 5 is arranged on the outer side wall of the coil setting sheet 1, the upper part and the lower part of the outer side wall of the support column 2 are provided with the fixing sheet clamping sleeves 3, and the two ends of the fixing sheet clamping sleeves 3 and the two ends of the coil setting sheet 1 are respectively positioned and abutted. Specifically, the coil shape setting sheet 1 is specifically an arc shape setting sheet. In this embodiment, the thickness of the coil shape fixing sheet 1 is 1.5mm, the coil shape fixing sheets 1 are uniformly coated on the outer side wall of the supporting column 2 at an interval of 0.5mm before being pairwise, the thickness of the coil shape fixing sheet 1 may be of other specifications, and may be arranged at intervals of other lengths, which belongs to equivalent replacement, and the protection scope of the present invention cannot be limited thereby. The outer surfaces of the four coil shaping sheets 1 are provided with grooves, and the structures, the widths, the lengths and the depths of the grooves are consistent with those of transverse coils, so that the shaping and the fastening of the coils can be completely realized; the coil shaping sheet 1 with different groove layouts can be replaced according to the wiring layout of the coil, so that the practicability of the whole device is higher, and the coils with various widths and lengths can be manufactured.
Specifically, both ends of the coil shape fixing sheet 1 are provided with positioning handles 13, the fixing sheet ferrule 3 is provided with a positioning concave portion 32, and the positioning handles 13 are inserted into the positioning concave portion 32 to make the coil shape fixing sheet 1 and the fixing sheet ferrule 3 positioned and abutted. Specifically, the positioning concave portion 32 of the fixing plate ferrule 3 is a rectangular notch, and the positioning handle 13 is a rectangular positioning handle 13; the number of the coil shaping sheets 1 is four, and each coil shaping sheet 1 is provided with one positioning handle 13; four positioning concave parts 32 are arranged on the fixing plate clamping sleeve 3 along the central rotation symmetry.
Specifically, the coil shaping outer sleeve 5 is an arc-shaped shaping outer sleeve, four coil shaping outer sleeves 5 are arranged, and every two coil shaping outer sleeves 5 are mutually spliced to form a hollow cylindrical shaping outer sleeve and cover the outer side wall of the coil shaping sheet 1. The fixing piece clamping sleeve 3 is a cylindrical annular fixing piece clamping sleeve 3, and the inner diameter of the fixing piece clamping sleeve 3 is equal to the outer diameter of the support column 2; the outer diameter of the fixing piece clamping sleeve 3 is equal to that of the coil shaping piece 1.
Specifically, a first connecting screw hole 11 is formed in the coil shaping sheet 1, a first connecting matching screw hole 21 is formed in the support post 2, and the coil shaping sheet 1 and the support post 2 are fixed through a first screw; still be provided with the hole of stepping down 12 on the coil setting piece 1, be provided with the second on the coil setting overcoat 5 and connect screw 51, be provided with the second on the support column 2 and connect cooperation screw 22, pass in proper order through the second screw the second is connected screw 51, is stepped down hole 12 and second and is connected cooperation screw 22 and realize support column 2 and coil setting overcoat 5's is fixed.
The fixing plate clamping sleeve 3 is provided with a third connecting screw hole 31, the support column 2 is provided with a third connecting matching screw hole 23, and the fixing plate clamping sleeve 3 and the support column 2 are fixed through a third screw.
The support column 2 is specifically a cylindrical support column 2; the four coil shape-defining pieces 1 are enclosed to form an enclosing cavity which is tightly attached to the supporting column 2 through a first screw, and in order to better separate the coil shape-defining pieces 1 from the transverse radio-frequency coil 4, the coil shape-defining pieces 1 are arranged at intervals, so that the coil shape-defining pieces 1 are mutually abutted to form a hollow cylinder, and the hollow cylinder and the transverse radio-frequency coil 4 can be separated, and thus the transverse radio-frequency coil 4 can be better taken out. The fixing piece ferrule 3 is fixed on the support column 2 by a third screw, and the stability of the position of the coil shaping piece 1 is maintained by the cooperation between the positioning handle 13 and the positioning concave part 32. The coil shaping outer sleeve 5 is fixed on the coil shaping sheet 1 through a second screw, so that the transverse radio frequency coil 4 is prevented from popping out of the groove, and the round transverse radio frequency coil 4 with good curvature can be formed after being pressed for a certain time. In this embodiment, two ends of the coil shaping sheet 1 are respectively provided with a first connection screw hole 11 and a receding hole 12, and two ends of the supporting column 2 are respectively provided with a first connection matching screw hole 21, a second connection matching screw hole 22, and a third connection matching screw hole 23. In the process of disassembling the mould, in order to avoid deformation caused by secondary stress of the transverse radio frequency coil 4, the second screw is firstly taken down to take down the coil shaping outer sleeve 5; loosening first screw and third screw on support column 2 again, taking off stationary blade cutting ferrule 3, take out support column 2, press coil setting piece 1 inwards again to can easily dismantle coil setting piece 1 and can not influence the circular horizontal radio frequency coil 4 that has already set shape. The radian is less than the outside cylinder quarter circular arc of support column 2 for every coil shape fixing piece 1 internal radian certain distance promptly coil shape fixing piece 1 is at a certain distance of interval between two liang for coil shape fixing piece 1 is convenient for break away from the coil, and it is convenient quick to dismantle, and does not destroy the coil. The coil setting outer sleeve 5 is cylindrical, the inner diameter of each setting outer sleeve is equal to the outer diameter of each setting sheet, the inner arc degree is equal to the quarter circular arc of a cylinder formed by the outer sides of four setting sheets, screw holes are formed in the two ends of the setting outer sleeve in the axial direction, the setting outer sleeve is installed on the outer side wall of the fixing sheet clamping sleeve 3 through screws, a coil is fastened, and the curvature of the wound coil is guaranteed. The fixed plate cutting ferrule 3 that adopts is the cylinder annular, and the internal diameter equals 2 external diameters of support column, and the external diameter equals 1 external diameters of coil setting piece, and 3 one end of fixed plate cutting ferrule is equipped with four breachs, and two fixed plate cutting ferrules 3 are closely nested through location nested handle and coil setting piece 1 for the coil still can keep the shape under the condition of not going up set screw, can ensure to dismantle the process coil and keep good shape.
The invention also provides a transverse radio frequency coil 4 shaping method, which adopts the nuclear magnetic resonance transverse radio frequency coil 4 shaping device; the shaping method adopted by the invention is simple, convenient and quick to operate and is beneficial to keeping the coil in a good shape in the operation process. The method comprises the following steps:
step 1: mounting four coil shaping sheets 1 on the outer surface of the support column 2 through first screws according to the grain sequence of the grooves;
step 2: embedding two fixing piece clamping sleeves 3 into the coil shaping piece 1, and installing the two fixing piece clamping sleeves at the two outer ends of the supporting column 2 by using third screws;
and step 3: pressing and clamping the transverse radio frequency coil plane plate 41 into a groove of the coil shaping sheet 1, and forming a circular transverse radio frequency coil 4 along the groove;
and 4, step 4: mounting four coil shaping outer sleeves 5 on the outer surface of the coil shaping sheet 1 by using second screws, and pressing a transverse radio frequency coil 4 on the outer side of the coil shaping sheet 1 to form a circular transverse radio frequency coil 4 with curvature;
and 5: welding a capacitor on the transverse radio frequency coil 4;
step 6: after a certain time interval, in this embodiment, after an hour interval, the first screw, the second screw and the third screw are removed, the coil shaping outer sleeve 5 and the fixing piece ferrule 3 are removed, and the central support column 2 is pulled out;
and 7: and pressing the four coil shaping sheets 1 inwards in sequence to be separated from the circular transverse radio frequency coil 4, and taking out the transverse radio frequency coil 4.
The above description is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any person skilled in the art can make insubstantial changes in the technical scope of the present invention within the technical scope of the present invention, and the actions infringe the protection scope of the present invention are included in the present invention.
Claims (10)
1. A nuclear magnetic resonance transverse radio frequency coil shaping device is characterized by comprising a support column, a coil shaping sheet, a coil shaping outer sleeve and a fixing sheet clamping sleeve; the coil shaping sheet is provided with a groove, and the wiring layout of the groove is consistent with that of the transverse radio frequency coil; the coil shaping sheets are fixedly arranged in the middle of the outer side wall of the supporting column, and every two coil shaping sheets are uniformly coated on the outer side wall of the supporting column at a certain interval; the transverse radio frequency coil is arranged in the groove; the coil setting jacket is arranged on the outer side wall of the coil setting sheet, the upper portion and the lower portion of the outer side wall of the supporting column are provided with the fixing sheet clamping sleeves, and the two ends of the fixing sheet clamping sleeves and the two ends of the coil setting sheet are respectively positioned and abutted.
2. The apparatus of claim 1, wherein: the width, length and depth of the groove are consistent with those of the transverse radio frequency coil.
3. A transverse radio frequency coil shaping apparatus according to claim 2, further comprising: the coil shaping sheet is specifically an arc-shaped shaping sheet.
4. The transverse radio frequency coil setting device for nuclear magnetic resonance as claimed in claim 3, wherein the coil setting sheet has positioning handles at both ends thereof, the fixing sheet sleeve has positioning concave portions, and the positioning handles are inserted into the positioning concave portions to make the coil setting sheet and the fixing sheet sleeve positioned and abutted.
5. The apparatus according to claim 4, wherein there are four coil shape-defining pieces, and each coil shape-defining piece has one of said positioning handles; four positioning concave parts are arranged on the fixing sheet clamping sleeve along the central rotation symmetry.
6. The transverse radio frequency coil setting device for nuclear magnetic resonance according to claim 5, wherein the coil setting outer sleeve is an arc-shaped setting outer sleeve, the number of the coil setting outer sleeves is four, and every two coil setting outer sleeves are spliced with each other to form a hollow cylindrical setting outer sleeve and cover the outer side wall of the coil setting sheet.
7. The setting device for an MRI transverse RF coil according to claim 6, wherein said coil setting plate has a first connection screw hole, said supporting post has a first connection fitting screw hole, and said coil setting plate and said supporting post are fixed by a first screw;
still be provided with the hole of stepping down on the coil setting piece, be provided with the second on the coil setting overcoat and connect the screw, be provided with the second on the support column and connect the cooperation screw, pass in proper order through the second screw the second is connected the screw, is stepped down hole and second and is connected the cooperation screw and realize support column and coil setting overcoat are fixed.
8. The setting device of claim 7, wherein the fixing plate holder is a cylindrical ring-shaped fixing plate holder, and an inner diameter of the fixing plate holder is equal to an outer diameter of the support column; the outer diameter of the fixing piece clamping sleeve is equal to that of the coil shaping piece; the positioning concave part of the fixing plate clamping sleeve is specifically a notch.
9. The setting device of claim 7, wherein the fixing piece sleeve is provided with a third connection screw hole, the support post is provided with a third connection matching screw hole, and the fixing piece sleeve and the support post are fixed by a third screw.
10. A transverse rf coil shaping method, characterized by using a nmr transverse rf coil shaping apparatus according to claim 9; the method comprises the following steps:
step 1: mounting four coil shaping sheets on the outer surface of the support column through a first screw according to the grain sequence of the grooves;
step 2: embedding two fixing piece clamping sleeves into the coil shaping pieces, and installing the two fixing piece clamping sleeves at the two ends of the outer side of the supporting column by using third screws;
and step 3: pressing and clamping the transverse radio frequency coil plane plate into a groove of a coil shaping sheet, and forming a circular transverse radio frequency coil along the groove;
and 4, step 4: mounting four coil shaping outer sleeves on the outer surfaces of the coil shaping sheets by using second screws, and pressing the transverse radio frequency coil on the outer sides of the coil shaping sheets to form a circular transverse radio frequency coil with curvature;
and 5: welding a capacitor on the transverse radio frequency coil;
step 6: after a certain time interval, the first screw, the second screw and the third screw are dismounted, the coil shaping outer sleeve and the fixing piece clamping sleeve are dismounted, and the central support column is pulled out;
and 7: and pressing the four coil shaping sheets inwards in sequence to be separated from the round transverse radio frequency coil, and taking out the transverse radio frequency coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010014523.7A CN111060856B (en) | 2020-01-07 | 2020-01-07 | Nuclear magnetic resonance transverse radio frequency coil shaping device and transverse radio frequency coil shaping method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010014523.7A CN111060856B (en) | 2020-01-07 | 2020-01-07 | Nuclear magnetic resonance transverse radio frequency coil shaping device and transverse radio frequency coil shaping method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111060856A CN111060856A (en) | 2020-04-24 |
| CN111060856B true CN111060856B (en) | 2021-03-16 |
Family
ID=70306577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010014523.7A Active CN111060856B (en) | 2020-01-07 | 2020-01-07 | Nuclear magnetic resonance transverse radio frequency coil shaping device and transverse radio frequency coil shaping method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111060856B (en) |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6144203A (en) * | 1997-11-28 | 2000-11-07 | Hitachi Medical Corporation | Coil harness assembly for interventional MRI application |
| JP3549789B2 (en) * | 1999-11-26 | 2004-08-04 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | RF coil and magnetic resonance imaging apparatus |
| US7755357B2 (en) * | 2004-12-22 | 2010-07-13 | Koninklijke Philips Electronics N.V. | Radio frequency coil with transmission line end-rings |
| DE102007053976B4 (en) * | 2007-11-13 | 2009-08-27 | Bruker Biospin Gmbh | NMR resonator, formed as a double-sided conductive coated insulating film, and associated low-resolution NMR spectrometer |
| CN201797420U (en) * | 2010-08-03 | 2011-04-13 | 浙江山风汽车空调有限公司 | Disc-type motor coil shaping device |
| CN102350795B (en) * | 2011-06-27 | 2014-03-26 | 江阴万康医疗科技有限公司 | Molding process of magnetic resonance radio frequency imaging coil flexible encapsulation shell |
| CN203745629U (en) * | 2013-06-28 | 2014-07-30 | 上海西门子医疗器械有限公司 | Coil support for superconducting magnet |
| US10908238B2 (en) * | 2013-10-25 | 2021-02-02 | Brainlab Ag | Magnetic resonance coil unit and method for its manufacture |
| EP3080632A1 (en) * | 2013-12-10 | 2016-10-19 | Koninklijke Philips N.V. | Mr-coil housing with spacer shaped to maintain an anatomy receiving space from the mri bore wall |
| CN203865730U (en) * | 2014-05-22 | 2014-10-08 | 浙江杭泰汽车零部件有限公司 | Combined type wire reel |
| US20170160354A1 (en) * | 2014-06-30 | 2017-06-08 | Samsung Electronics Co., Ltd. | Radio frequency coil for magnetic resonance imaging and magnetic resonance imaging system |
| CN107209234B (en) * | 2015-02-03 | 2020-04-14 | 皇家飞利浦有限公司 | Radiopaque, low cost, lightweight, multi-purpose composite radio frequency coil for MRI |
| CN205147084U (en) * | 2015-11-17 | 2016-04-13 | 开封开德流量仪表有限公司 | Coil design mould |
| CN106737283A (en) * | 2016-12-20 | 2017-05-31 | 国网重庆市电力公司电力科学研究院 | A kind of fixture for nmr sensor |
| CN207226685U (en) * | 2017-09-25 | 2018-04-13 | 上海上缆神舟线缆有限公司 | Spiral cable shape fixing module and device |
| CN110095741B (en) * | 2019-04-30 | 2021-09-28 | 上海东软医疗科技有限公司 | Magnetic resonance coil position determining method and device and magnetic resonance imaging system |
-
2020
- 2020-01-07 CN CN202010014523.7A patent/CN111060856B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111060856A (en) | 2020-04-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102998633B (en) | Magnetic field measurement device of magnetic resonance imaging superconducting magnet central area | |
| US4758813A (en) | Cylindrical NMR bias magnet apparatus employing permanent magnets and methods therefor | |
| US4093912A (en) | NMR magnet assembly with pole face parallelism adjustment | |
| US4517516A (en) | NMR Probe coil form structure | |
| EP1085337A2 (en) | Birdcage RF coil for magnetic resonance | |
| CN102290188B (en) | Winding device for shimming superconducting coil and and winding method thereof | |
| EP1612576B1 (en) | NMR shim coils | |
| CN111060856B (en) | Nuclear magnetic resonance transverse radio frequency coil shaping device and transverse radio frequency coil shaping method | |
| CN1798981A (en) | Magnetic resonance imaging scanner with molded fixed shims | |
| Badilita et al. | Microfabricated inserts for magic angle coil spinning (MACS) wireless NMR spectroscopy | |
| US4563648A (en) | Geometric compensation of magnetic susceptibility perturbations in an RF spectrometer | |
| JPH03185802A (en) | Passive shim composite substance for mr magnet | |
| Yang et al. | A low-cost, miniature Halbach magnet designed for portable time domain NMR | |
| JP5203128B2 (en) | NMR probe head with multiple resonator systems for simultaneous measurement of multiple samples in coupled mode | |
| CN103257330A (en) | Inner diameter supporting unit and magnetic-field measuring device | |
| US7570057B2 (en) | NMR spectrometer | |
| WO2009012407A2 (en) | Arched saddle-shaped nmr rf coils | |
| TWM324205U (en) | Single-sided portable NMR apparatus | |
| CN109597008B (en) | Shimming tool | |
| US6175237B1 (en) | Center-fed paralleled coils for MRI | |
| US5221903A (en) | Method for the determination of very small magnetic susceptibilities and probehead for a high resolution nmr spectrometer for the purpose of carrying out the method | |
| JP4602910B2 (en) | NMR apparatus and positioning method thereof | |
| WO2001031360A1 (en) | Shim assembly for a magnet and method for making | |
| US11075027B1 (en) | Permanent magnet for generating homogenous and intense magnetic field | |
| US3038115A (en) | Orientation of nuclear magnetic resonance samples |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |